Nut-lock washer.



PATENTED SEPT; 24,1"1907, c. G. 'ETTE. NUT L' APPLIOATIO Wihmsses Charles G Etta UNITED STATES PATENT- OFFIGE.

CHARLES e. ETTE, OF ST. .LOUIS, MIss'oURL- Nor-Loon WASHER To all ivhom it may concern:

Be it known that I, Criantns G. E'rTE, a citizen of the United States, residingfat St. Louis, Missouri, have invented a certain new and useful Improvement in Nut-Lock Washers, of whichthe following is a full,

Figure 1 is a perspective view illustrating my improved nut-lock washer used in connectionwith a rail joint; Fig. 2 is an enlarged view of the washer; and

I Fig. 3 shows a slightly modified form of my invention.

' This invention relates to nut locks, and particularly to that type which consists of'a washer provided with an integral tongue that is adapted to be bent. into engagemcnt with the nut to prevent it from turning.

The main object of my invention is to provide a nutlock washer provid'ed with radially projecting tongues which are so formed that when the washer is in operative position a cold chisel or other suitable toolcan be easily inserted between one of the tongues and the structure through which the bolt extends to bend the tongue into engagement with the nut.

Another object of my invention'is to provide a nutlock washer which is so constructed that it can be placed in operative position with either of its side faces bearing against the structure through which the hereinafter pointed out.' I I The nut-lock washers of this type which have heretofore been used are provided with a tongue that lies tightly against the structurethrough which the bolt passes so that it is necessary to partially turn overor.

bevel the end of the tongue during the process of manufacturing the washer for the purpose of permitting a tool to be inserted between the tongue and the structure .to bend the tongue into engagement with the nut.

Furthermore, said 'washers are so constructed that a certain degree of care has to be' exercised when placing the washers in operative position due tothe fact that one particular side of the washer has to beplaced against the structure. Said washers are also more or less complicated andrequire machine work in their manufacture which adds greatly to the cost of production.

The nut-lock washer herein shown which represents the preferred form of my invention, overcomes the objectionable features abovereferred to, and briefly de- Specification of Letter-s Patent. Application. filed June 3,1907.' tierial No- 376,942.

Patented Sept. 24,1907.

scribed, consists of a round malleable iron washer provided' with a plurality of integral radially projecting tongues of less thickness than the washer'and located midway the two side faces of the washer.

Referring to Figs. 1 and 2 of the drawings which represent the preferred form of my invention, 1 designates a comparatively thick round washer formed of malleable iron and provided with a plurality'of inteness than-the washer so that when the washer is in operative position there will be a space, between the tongues and the outside face of the st .cture through 'Which the bolt extends, herein shown as the fish plate 4 of a rail joint. The tongues 2 are longer than the tongues 3 so that when the washer is used in connection with a rail joint one of the tongues 2 will bear against the base 5 of the rail and the diametrically opposite tongue 2. will engage the underneath side of the head 6 of the rail and thus prevent the washer from turning. The space between the fish plate and the tongues is of bend it outwardly into engagement with the nut 7v to lock same, as shown in Fig. 1.- As the tongues 2 and '3 are located at approximately the longitudinal center of the washeiythat isto say, an equal distance from each of the side faces of the washer, the washer can be placed in position with either of its side faces bearing against washer from turning when one of its side faces bears against the fish plate and the other pair of tongues 2 preventing the washer from turning when its opposite side face bears against the fish plate. The washer is of greater diameter than the nut so that the tongue the nut.

' Instead ,of providing the washer with long tongues 2 to prevent it from turning I can form teeth 8 on one 'ofthe side faces of the washer, as shown in Fig. 3, so

structure said teeth will be embedded in the wood. This form of washer can also be used on a rail joint in which the fish plate isprovidcd with oval or elongated bolt-holes, the tongues 8 being located adjacent the inner edge of the washer so that they will project intov the oval bolt-hole in the fish plate when the washer is inoperative position and thus prevent the washer from turning.

As the washer is made of malleable iron it can be cast and accordingly no nun-hintwork is required in the process of making it, so that the washer can be produced at a small cost.

3 willonlyliave to be bent or turned about 30 to lock gralradially projecting tongues '2 and 3 of less thicksufiicient width toenablc a cold chisel or other tool-to beinserted easily underneath one of thetongucs 3 and the fish plate, one -pair of tongues 2 preventing the that when used on a bolt that passes through a wooden xg 'L'i'ms described my invention what I. claim mi desire to sac-ure by Letters Patent is: F. nut u; emlsisting of a vmnpnrntivoLy thick aund DIOY' t with a plurality of radially projmting "um; m. 1055 i' icln mss fl'mn ihu Washer and located mu dis-$5: 1 Hum back of 111 a side faces of l'hu .9216 05 said tonguw hci adapted to be how wgagenzent with a nut to lock 1L on its bolt, and

tongues of greater length than the lockingiouguos to prawn. the washer from turning; subm'nntially as. d0- '10 scribefi.

:imony whm'euf I hereunto nfiix my signature in w. 00 of two witnesses, this 28th day of May 1907.

CHARLES G. E'I'll).

\Y'Zinessos WAmuu C. RArmnm, EDWARD Smzwmmz. 

